2211011161 has 2 divisors, whose sum is σ = 2211011162. Its totient is φ = 2211011160.

The previous prime is 2211011147. The next prime is 2211011203. The reversal of 2211011161 is 1611101122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1257127936 + 953883225 = 35456^2 + 30885^2 .

It is a cyclic number.

It is not a de Polignac number, because 2211011161 - 2⁵ = 2211011129 is a prime.

It is not a weakly prime, because it can be changed into another prime (2211911161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105505580 + 1105505581.

It is an arithmetic number, because the mean of its divisors is an integer number (1105505581).

Almost surely, 2^2211011161 is an apocalyptic number.

It is an amenable number.

2211011161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211011161 is an equidigital number, since it uses as much as digits as its factorization.

2211011161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 16.

The square root of 2211011161 is about 47021.3904622141. The cubic root of 2211011161 is about 1302.7576885853.

Adding to 2211011161 its reverse (1611101122), we get a palindrome (3822112283).

The spelling of 2211011161 in words is "two billion, two hundred eleven million, eleven thousand, one hundred sixty-one".